TRIHALOMETHANES LAB TESTING
FOR CLIENTS NATIONWIDE

Trihalomethanes are defined as a group of chemicals formed when chlorine or other disinfectants used to control microbial contaminants in drinking water react with naturally occurring matter. THM levels have been shown to rise with pH, temperature, time, and the prescience of various precursors. It’s likely that your drinking water currently includes traces of these trihalomethanes.

At Engineering Performance Solutions, we offer reliable THMs testing services to clients across the nation. Studies suggest that extended exposure to high levels of trihalomethanes may ultimately be linked to a slight increase in the risk of bladder and colon cancer. Keeping this in mind, it’s imperative that you take the proper steps to screen for these chemicals in your drinking water.

Fortunately, our certified staff members are always standing by to lend a hand. Contact our facility today to learn more about our water testing consulting services or to schedule trihalomethanes lab testing!

Trihalomethanes Lab Testing Services for Water Systems Throughout the United States

Trihalomethanes (THMs) are disinfection by-products that form when chlorine used during water treatment reacts with naturally occurring organic matter present in source water. The four regulated compounds are chloroform, bromodichloromethane, dibromochloromethane, and bromoform. The U.S. EPA has established a Maximum Contaminant Level (MCL) of 80 µg/L for Total Trihalomethanes (TTHMs) in public drinking water systems. THM formation increases with higher pH, warmer water temperatures, longer distribution system residence times, and elevated organic precursor concentrations.

Trihalomethanes Testing and Its Role in Federal Drinking Water Compliance

Disinfection byproduct formation, including trihalomethanes (THMs), remains a major concern for utilities evaluating treatment performance and distribution system behavior. Utilities, municipalities, engineers, and industrial facilities across the United States use research-based water testing and Simulated Distribution System (SDS) testing to better understand DBP formation potential, evaluate treatment effectiveness, and support system optimization or retrofit decisions.

At Engineering Performance Solutions, our testing focuses on how source water characteristics, treatment processes, and carbon performance influence downstream DBP formation potential under real-world operating conditions.

Our THMs analysis covers all four regulated compounds:

  • Chloroform
  • Bromodichloromethane
  • Dibromochloromethane
  • Bromoform

What Causes THM Levels to Rise?

THM concentrations are not static. Several water quality and operational conditions drive them higher, and understanding those triggers is foundational to controlling them.

Contributing Factor Impact on THM Concentration
Elevated pH levels Accelerates disinfection by-product formation
Warmer water temperatures Speeds up the chemical reaction between chlorine and organics
Extended water residence time Increases compound buildup within distribution systems
High organic precursor load Raises overall THM yield from the disinfection process

Tracking these variables alongside regular THM testing gives water system operators a fuller, more actionable picture of their treatment performance over time.

How Our Team Helps Clients Address the Root Causes of High THM Levels

Engineering Performance Solutions goes beyond reporting numbers by providing technical consulting alongside every analysis. Our team helps clients interpret their results and address the root causes of elevated trihalomethane levels directly.

Our consulting support includes:

  • Process adjustment recommendations to reduce THM formation at the treatment stage
  • Precursor reduction strategies tailored to your specific source water characteristics
  • Distribution system management guidance to limit compound buildup through the network
  • Activated carbon media testing to support and evaluate alternative treatment approaches

This connected approach bridges laboratory science to practical water system management, keeping clients informed, prepared, and in control.

Connect with Our Lab and Start Your THM Screening Today

If you are ready to evaluate your water system for trihalomethane levels or want to learn more about our comprehensive THM lab testing services, contact our certified team today. Call (855) 338-7770 or visit our contact page to submit your project details. Our staff is ready to provide the accurate results and expert guidance your system needs.

EPS Mission

COMPREHENSIVE TRIHALOMETHANES (THM) TESTING SERVICES THROUGHOUT THE U.S.

ACCURATE, NATIONWIDE ANALYSIS FOR SAFE DRINKING WATER

Trihalomethanes (THMs) are a group of disinfection by-products formed when chlorine or other disinfectants used in drinking water treatment react with naturally occurring organic matter. These compounds—such as chloroform, bromoform, bromodichloromethane, and dibromochloromethane—can develop in distribution systems as water travels through pipes, especially under certain environmental conditions.

THM concentrations typically increase with:

  • Higher pH levels
  • Warmer temperatures
  • Longer water residence times
  • Elevated levels of organic precursors, such as decaying vegetation

Because of these factors, it’s common for drinking water to contain trace amounts of THMs, particularly in systems reliant on surface water sources.

 

COMPREHENSIVE THMS TESTING WITH ENGINEERING PERFORMANCE SOLUTIONS

At Engineering Performance Solutions, we provide precise and dependable THMs analysis for clients nationwide. Using EPA & Standard testing methodologies, we accurately quantify THM concentrations to help utilities, engineers, businesses, and facilities test different disinfection strategies to help them on the path to compliance.

Pure Water

THE HEALTH & REGULATORY IMPORTANCE OF THM MONITORING

While low levels of trihalomethanes are common in treated water, studies suggest that long-term exposure to elevated THM levels may be associated with a slightly higher risk of bladder and colon cancer. Because of these potential health risks, the U.S. Environmental Protection Agency (EPA) has set a Maximum Contaminant Level (MCL) for Total Trihalomethanes (TTHMs) at 80 µg/L.

Regular monitoring is essential for:

  • Regulatory compliance under state and federal drinking water standards
  • Protecting public health
  • Diagnosing distribution system issues
  • Improving taste and odor
  • Optimizing disinfection practices without compromising microbial safety

Why Partner with EPS for THM Analysis?

CONSULTING BEYOND THE LAB

EPS provides guidance for reducing THMs, including process adjustments, precursor reduction strategies, distribution system management, and carbon media testing recommendations.

NATIONWIDE SERVICE

Our streamlined sample shipping process makes it easy for clients throughout the U.S. to access accurate and affordable testing.

Contact Us

Whether you’re responding to customer concerns, proactively monitoring your system, or testing disinfection alternatives, our certified team is here to help.

Reach out today to learn more about our water testing services or to schedule your trihalomethanes analysis.

FAQs

What are trihalomethanes, and why do they form in drinking water?

Trihalomethanes are disinfection byproducts that form when chlorine reacts with natural organic matter in source water. The four regulated compounds are chloroform, bromodichloromethane, dibromochloromethane, and bromoform.

What is the EPA's Maximum Contaminant Level for total trihalomethanes?

The U.S. EPA sets the Maximum Contaminant Level for Total Trihalomethanes at 80 µg/L in public drinking water systems, requiring routine trihalomethanes lab testing to confirm ongoing compliance.

Who is required to conduct THM testing under federal regulations?

Public water systems are required under the EPA’s Disinfectants and Disinfection By-Products Rule to conduct regular THMs analysis to meet federal and applicable state drinking water standards.

What factors cause trihalomethane levels to increase in a water system?

THM concentrations rise with higher pH, warmer temperatures, longer distribution system residence times, and elevated organic precursor loads, all conditions that accelerate disinfection byproduct formation during water treatment.

How can a lab help reduce THM levels in my water system?

A lab delivers precise THM analysis alongside consulting support, helping operators identify precursor sources, adjust treatment processes, and evaluate activated carbon options to effectively lower trihalomethane concentrations.